(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "The manufacture and properties of iron and steel"

390
METALLURGY OF IRON AND STEEL
TABLE XVII-Z.
Subdivision of the Groups in Table XVII-Y that contain over Fifty Heats, and are below 0.225 per cent, in carbon, with special subdivision of the one large group showing a difference of more than 1500 Ib. between the actual and calculated strength.
Limits of carbon ; per cent.	Limits of manganese ; per cent.	Number of heats.	Chemical composition ; per cent.			Ultimate strength ; pounds per square inch.		
			i	CO I J ft	6   t*> 1	(D . V r-l     c3 oj 0 p 3	cB 3 a S-l 2 >. w	1 e 5
Acid steel : 0.135 to 0.174	0.40 to 0.44 0.45 to 0.49	55 41	0.1459 0.1477	0,0569 0.0564	0.417 0.470	60560 61483	60484 61250	-76 -233
Basic steel : 0.030 to 0.074	0.10 to 0.14 0.15 to 0.19	56 9	0.0327 0.0319	0.0073 0.0071	0.130 0.159	45674 45458	44748 44666	-926. -792
0.075 to 0.124	0.40 to 0.44 0.45 to 0.49 0.40   ' 0.41 0.43 0.43 0.44 0.45 0.46 047 0.48 0.49	33 20 13 4 5 4 8 4 5 3 4 4	0.0961 0.0946 0.0963 0.0888 0.0946 0.1012 0.0980 0.0870 0.0922 0.0833 0.1135 0.0948	0.0086 0.0079 0.0075 0,0110 0.0080 0.0083 0.0091 0.0078 0,0084 0.0073 0.0080 0.0075	0.418 0.470 0.400 0.410 0.420 0.430 0.440 0.450 0.460 0.470 0.480 0.490	49809 49434 48949 49510 49469 50626 51053 48521 49693 48383 50993 49253	51294 51784 50965 50824 51096 51812 51776 50869 51455 50718 53452 51983	+1485 +3350 +2016 +1314 +1637 +1186 +733 +2348 +1763 +3335 +2459 +2729.
0.135 to 0.174	0.40 to 0.44 0.45 to 0.49	33 32 66 59 48 17	0.1522 0.1541	0.0114 0.0114	0.418 0.473	55495 56265	56139 57102	+634 +837
0.175 to 0.224	0.40 to 0.44 0.45 to 0.49 0.50 to 0.54 0.55 to 0.59		0.2036 0.3046 0.2063 0.2049	0.0090 0.0107 0.0139 0.0124	0.416 0.468 0.514 0.566	60344 61208 62358 63086	60095 61247 62584 63199	-249 +39 +226 +113
error,, then it would be probable that the value of carbon was too high and the base too low. Investigation failed to show any regu-lar law either for groups of high and low carbon, or for groups of high and low manganese. The one fact which appears to be true of both acid and basic steel is that the steels that are low in carbon and low in manganese are stronger than would be called for by the formula, and it seems probable that this is due to iron oxide.
CONCLUSIONS.
Carbon.-In acid steel each 0.01 per cent of carbon strengthens steel.by 1000 Ib. per square inch when the carbon is determined